Regulator for electric currents.



Patented ma 18, 1909.

T. SPENCER.

REGULATOR FOB ELECTRIC DUB-BEETS. APPLIOAIIOH I'ILBI! iIOV. 25, 1905. 922,057.

INVENTOR: mums JPZ-WCE/fi ff 4 a a '7; E r 7 WITNESSES:

50 tion of a reg'ul THOMAS SPENCER, PHILADELPHIA, PENNSYLVANIA.

REGULATOR FOR ELECTRIC OURBENTB.

Specification of Letters Patent.

Patented May 18, 1809.

a plication fled November 25; 1905. Serial No. scam.

To all whom it may concern: I

Be it known that I, Tnotms Srnnonn, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented '5 certain new. and useful Improvements in Regulators for Electric Currents, whereof the following is a spccificatio i, reference being had to the accompanying drawings.

My invention relates to t at class of regulators wherein a solenoid coil is included in the circuit to be regulated in such relation to an iron core that relative movement of the coil and core is'efl'ected in accordance with variations in the resistance in the circuit,

with consequent variations in the impedance ,00 the coil which compensate for said variations'in the resistance. For instance, such a regulator may be included in an alternating current circuit withv arc lamps ranged in series, soas to maintain the current subpon eit er the relative y movable coil or core, with the weight of the movable element posed to the magnetic stress between said ments, so that a characteristic curve indieating the gravitativ'e force acting on the sus nded mass shall substantially coincide. wit .a charactefisticcurve indicating said magnetic stress throughout the range of movement for which the regulator is do.-

the form of my invention hereinafter described, the core is stationary and the coil is suspended b 'a flexible medium, coming chains isposed in-parallel. relation,

40 so that throixghout the range of movement of the coil its axis is maintained substantially parallel with the common tangent of the ares traversed by thepoints of said flexible meotors attached to the coil.

My invention comprises the various novel featurer of construction and arrangement hereinafter 'more definitely specified and claimed. I

In the drawings, Figural, is aside elevaa or embodying m improve- Jnonta, with a diagrammatic in ication of the circuit in whichjit is comprised. Fig. 11

is an, elevation of the lefthand end of said later as shown in Fig. I Fi III, is an deviation of the right hand and 0 said rogu I: Fig. IV, is a dis-- later as' shown in Fi" and the cap gram indicating the approximate characteristic curve of. the opposed forces in the to later. 7 1

11 said drawings, 1, is the base plate of the frame comprising the standards 2, and 3, plate 4. The solenoid core 6, is convenienty supported by the boss 7, on said base plate 1, and by the brackets 81, which respectively embrace the opposite standards 3. The solenoid coil 9, is suspended in operative relation with the core 6, y the two airs of flexible connectors 10, and 11, which are conveniently made of chains, the lower ends of whichrespeetivelv engage the studs 12, and 13, on the coil bands 14, and the up er ends of which respectively engage the stur s 15, and 16, on said ca plate 4. aid coil 9, may be oscillated y the lever comprising the arms 17, which engage said studs 12, and the arm 18, provided with the handle 19. Said lever arm 18, is operatively connected with the plunger 20, arranged to reciprocate in the dash pct 21, so as to Said exible connectors ll), and 11, being disposed in parallel relation, throughout the range of movement of said coil 9, its axis is maintained substantially parallel with the common tangent of the arcs traversed by the points of the respective connectors, attached to said coil, and as the cll'cctivo gravitativo force acting on the coil .1, thus suspended, varies in accordance with tho oll'vctivv length of said connectors 10, and 11, l lind it convenient to vary such lengthliy chan ing the position ol the fulcrum bearing rolors 33, and 24, longitudinally with res not to said connectors. Said rollers 23, am 24, are convcniently carried. by the fulcrum bearing plate 26, which is supported by the standards 2, and 3, and arranged to be longitudinal-l shifted thereon by the screw 28 which 1s journalcd in the ca plate 4, and provided with the hand whee 29. Said coil 9, is provided with the flexible leads 31, and 32, extending to the respective terminals 34, and

revent sudden movement of said coil 9.

35, supported by the standards 3, and, as

diagrammatically indicatedin Fig. I, said. coil may be included in a circuit with a generator 38, and a seriesof arc lamps 40.

Referring to Fig. IV, and assuming that the base line 42, of a system of coordinates, is equal in length to the coil 9; the distance from 43 to 45 represents a distance which the corefi, has entered said coil, and, with a cur rent of given amperage, the vertical distance to 46, indicates the ma itude of the magnetic stress between saii elements at that point. A characteristic curve, for that amperage, may be thus reduced by a succession of determined points represented by the line 43, to 48, which approximates very closely to the straight line 43, to 49, and, for

.a current of greater "on erage a corresponding curve ma be simi arly produced, indicated by the ins 43, to 50, c osely approximating to the straight line 43, to 52.

It is to be understood that by adjustment of the effective len th of the flexible con nectors 10, and 11, 81y rotation of the screw 28, and consequent chan e' in the position of the fulcrum beari rollers 23, and 24, as above described) t e effective ravitative force acting on the suspended col 9, can be determined to substantially coincide with either of the characteristic curves 43 to 48, or 43 to aforesaid, or an other curve characteristic of a current within the range of regulation for which the apparatus is designed. Although I find it convenientt-o make said connectors 10, and 11, of equal effective length, it may be observed that the upper ends of said connectors are provided with slotted plates 54, and so that said connectors may be adjustably secured on the res ective studs 15, and 16, by the nuts 56, and 57, with the effective length of said connectors 10, and 11, (extending below the fulcrum bearing rollers 23 and 24) equal or unequal, as desired.

It is to be understood that I do not desire to limit myself to the precise construction and proportion of the parts which 1 have illustrated, as it is obvious that various modifications may be made therein without dcparting'from the essential features of my invention.

,1 claim 1. In a reactance regulator for an alternating current circuit, the combination with a straight core; of a tubular coil included in the circuit to be regulated and adapted to inclose more or less of said core within it, in accordance with variations inthc magnetic stress between said core and coil; and a llcxible medium supporting said coil in such relation to the core, that the weight of the coil is opposed to the magnetic. stress which offccts its movement, and its axis is maintained-parall l with said core. while it movcs in an are.

2. [n a rcnrtancis regulator l' or an alternating current circuit, the combination with a straight core; of a tubular coil included in the circuit to be regulated and adapted to inclose more or loss of said coro within it, in accordance with variations in the magnetic stress between said core and coil; and, 'llexiblc chains supporting said coil, ,in such relation to thc core that its weight is opposed to the magnetic stress which eilects its move ment, and its axis, is maintained parallel with said core, while it moves in' an are;

3. In a reactance regulator for an altcrnat-' of the arcs traversed by the points of said flexible connectors attached. to the coil, said coil being supported by said chains in such relation to said core that the weight of said coil is opposed to the magnetic stress which efl'ects its movement.

4. In a reactancc regulator for an alternating current circuit, the combination with a core; of a tubular coil included in the circuit to be regulated and adapted to inclose more or loss of said core within it in accordance with variations in the. mugiictic stress be tween said core and coil; a flexible medium supporting said coil in such relation to the core that the weight of the c il is opposed to the magnetic stress ld'dl cd'ects lts movement: and, menus adjustable to vary the oll'cctivn length of said llrxible medium, subs1 initially as set forth.

5 [n a rciwtance regulator for an alternating current circuit, the combination with a core; of a tubular coil included in the circuit to be regulated and adapted to inclose more or loss of said core within it, in accordance, with variations in the magnetic stress between said core and coil; and, a lurality of parallel pivoted sup orts for sai coil mainmining said axis substantially parallel with the con'unon tangent of the arcs traversed by the points of said supports attached'to the coil, while moving with respect to said volt.

(i. In a rcactance regulator for-an alternatiug current circuit, the combinatiodlwith a straight core; of a tubular coil included in the circuit to be regulated and adapted to llu'lUifl more or less of said core within it, in :n-cordnnce with variations in the magnetic stress between said core and coil; and, a plurality of parallel pivoted chains supportin sztlll coil with its axis maintained paralhfi with respect to said core, and in such relation to said core that the weight of said coil is opposed by its movement.

7. In a reactance regulator for an alternating current circuit the combination with" a" core; of a tubular coil included in the circuit to be regulated and adapted to inclose more or less of said core within it. in accordance with variations in the magnetic stress between vsaid core and coil; a flexible 'cllain forming an oscillatory support for said coil the magnetic stress whichefiects iaq in such relation to the core that the weight of the coil is opposed to the m netic stress which eficcts its movement; an means adjustable to vary the center of oscillation of said coil on said chain,-substantially as set 'forth. 1

8. .In a reactance regulator for an alternating current circuit, the combination with a core; of a tubular coil included in the circuit I to be regulated and ads ted to inclose more I or less of said core wit in it in accordance l with variations in the ma netic stress be+ l tween said core and coil; a Tame; a flexible medium suspending said 0011 from said v respect tosaid medium, substantially as set forth,

9. Ina, reactance regulator for an alter-nets ing current circuit, the combination with a straight core; of a tubular coil included in the circuit to be regulated and adapted to inclose more'or less of said core within it, in accordance with variations in the magnetic stress between said core and coil; and, means suspending said coil for oscillatory movement, maintaining its axis obliquely transverse with respect to said suspending means.

In testimony whereof, I have hereunto frame, so that the weight of said coil is o"pi signed my name, at Philadelphia, Pennsyl is posed to the magnetic stress which effects its movement; and, means to vary the effective length of said flexible medium, comprising a fulcrum bearin supported by said I rame and adjustable ongitudinally with l l vania,' th1s 23rd day of November 1905.

THOMAS SPENCER. Witnesses:

HARRY HUSKEY,

FRANK W. BRADDQCK. 

